<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="../js/jquery-3.7.1.js" type="text/javascript" charset="utf-8"></script>
		<script type="text/javascript">
			$(function(){
				let state=false;
				$("img").on("click",function(){
					if(state){
						$("img").attr("src","../src/off.png");
						state=false
					}else{
						$("img").attr("src","../src/on.png");
						state= true
					}
				})
				// 1.设置状态,根据状态来修改
				// 2.
				
			})
		</script>
	</head>
	<body>
		<img src="../src/off.png" width="200px">
	</body>
</html>
